/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.grails.encoder;

public class ChainedDecoder implements Decoder {
    protected Decoder[] decoders;
    protected CodecIdentifier codecIdentifier;
    
    public ChainedDecoder(Decoder[] decoders) {
        this.decoders = decoders;
        this.codecIdentifier = createCodecIdentifier(decoders);
    }

    protected CombinedCodecIdentifier createCodecIdentifier(Decoder[] decoders) {
        return new CombinedCodecIdentifier(decoders, true);
    }

    @Override
    public CodecIdentifier getCodecIdentifier() {
        return codecIdentifier;
    }

    @Override
    public Object decode(Object o) {
        if (o == null) return o;
        Object decoded = o;
        for (Decoder decoder : decoders) {
            decoded = decoder.decode(decoded);
        }
        return decoded;
    }
}
